Keywords
geoelectical monitoring, dynamic components, equipotential lines
Start Date
1-7-2008 12:00 AM
Abstract
Electrical methods with artificial generators are widely used in geophysical prospecting (electrical prospecting). Last decades electrical methods were applied for investigation of geodynamic phenomena for the purpose of prediction of different catastrophes: earthquakes, landslides, karsts etc. (geodynamic electric method - GDEM).There exists the principal difference between electrical prospecting and GDEM. In the first case absolute values of geoelectrical parameters are measured, in the second case small time-space variations of geoelectrical parameters instead of the absolute values are measured.Change in rock mass state results in distortions of electric field of generator. These distortions can be scalar or vector. Scalar distortions, as a rule, are connected with temperature effect, precipitations. Vector changes in geoelectrical fields reflect the processes of origin and development of inhomogeneity. These vector changes of an electric field are the subject of our investigations. A special measurement procedure and the special equipment are required for the solution of this problem.The results gained by authors in the course different field and laboratory investigations are introduced in the present paper. The special method of the active geoelectric monitoring was used in all experiments.
On study of the geodynamic processes by geoelectrical methods.
Electrical methods with artificial generators are widely used in geophysical prospecting (electrical prospecting). Last decades electrical methods were applied for investigation of geodynamic phenomena for the purpose of prediction of different catastrophes: earthquakes, landslides, karsts etc. (geodynamic electric method - GDEM).There exists the principal difference between electrical prospecting and GDEM. In the first case absolute values of geoelectrical parameters are measured, in the second case small time-space variations of geoelectrical parameters instead of the absolute values are measured.Change in rock mass state results in distortions of electric field of generator. These distortions can be scalar or vector. Scalar distortions, as a rule, are connected with temperature effect, precipitations. Vector changes in geoelectrical fields reflect the processes of origin and development of inhomogeneity. These vector changes of an electric field are the subject of our investigations. A special measurement procedure and the special equipment are required for the solution of this problem.The results gained by authors in the course different field and laboratory investigations are introduced in the present paper. The special method of the active geoelectric monitoring was used in all experiments.
